# Definition:Ellipse/Vertex

< Definition:Ellipse(Redirected from Definition:Vertex of Ellipse)

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## Definition

Consider an ellipse $K$.

A **vertex** of $K$ is either one of the endpoints of the major axis of $K$.

In the above diagram, $V_1$ and $V_2$ are the **vertices** of $K$.

## Also see

## Linguistic Note

The plural of **vertex** is **vertices**.

The word **vertex** is Latin for **peak**, from which the irregular plural form.